The unit is supplied without a controller (Ventoxx "Twist" controller sold separately)

Energy efficiency class: A

Mounted horizontally to the exterior wall

Maintenance: filter replacement dependent on requirements. Fan, heat reservoir and filter should be checked and if necessary cleaned every 3 months.

Round mounting sleeve for easy installation in newly built houses, energy-efficient retrofitting and refurbishment of buildings

The ventilation unit operates in 4 phases:

- Phase 1: Warm, used up indoor air is extracted and transported to the outside. During transport it passes over the ceramic heat reservoir. The latter stores a large amount of the heat in the air (heat recovery).

- Phase 2: Within 68 seconds the heat reservoir has reached its maximum capacity. Afterwards, the energy-efficient fan automatically reverses the operation and now imports fresh air to the inside of the building.

- Phase 3: The fan transports fresh and cold air into the building. Once supply air passes through the heat reservoir it absorbs maximum heat from the reservoir thanks to its large surface (total surface 2.4m²). This warms up the air almost to room temperature while the reservoir slowly and carefully cools down.

- Phase 4: After 68 seconds the heat reservoir has cooled down, the heat has now been transferred to the room where the ventilation unit is applied. The fan will change direction of the airflow again and start a new cycle at phase 1.

Ventoxx RV-30

Ventoxx RV-30s

Ventoxx RV-25

Delivery includes

1. Inside cover

2. 3D filter, class G3

3. Reversible fan

4. Insulating material

5. Heat reservoir made from cordierite ceramic

6. Tube made from polyethylene plastic for adaption to individual wall thickness

7. Exterior cover

1. Inside cover

2. 3D filter, class G3

3. Reversible fan

4. Insulating material

5. Heat reservoir made from cordierite ceramic

6. Tube made from polyethylene plastic for adaption to individual wall thickness

7. Heat ring

8. Adjustbment box

9. Exterior cover

1. Inside cover

2. 3D filter, class G3

3. Tube made from polyethylene plastic for adaption to individual wall thickness

4. Reversible fan

5. Heat reservoir made from cordierite ceramic

6. Insulation material

7. Ventilation duct

8. Ventilation grille for window reveral

Characteristics / Installation

- for any wall thickness of 300mm or more

- for any wall thickness less than 300mm (exterior box contains additional length of pipework)

- can be mounted without exterior cover

- in insulated buildings supply and exhaust air is lead to the window reveral within the insulation (minimum thickness 100mm) where it is covered by the ventilation grille